streams, in: sheltered valleys, are poplars, willows, and pro-
bably ash or walnut. Where the Aran enters Nipal, at Tin-
gri, the vegetation appears (from a small collection we have
received thence) to be similar to that of Kunawar.
At Lhassa the country is open and stony, and without
trees, except such as arc cultivated, just as in Western Tibet.
Of these, the apricot is the only one of which we have any
certain knowledge. Vines have been stated to grow in the
city of Lhassa (Kumboldt, ' Asie Ccnt#ile'), -but this has been
ccw+xqjKgtcd by all our informants. Further cast, in the di-
rection of China, we learn from Hue and Gahct's Travels
1J<a# $ia mountains .arc covered with forests, while towards
tite scKtfth-cast, in the valley of the Yaru, a subtropical climate
is soon reached, tea, rice, and cotton being all cultivated.
IIJ. Eastern, India.
The axis, or watershed, of the great meridional chain which
iŤ Continuous with the Koucnlun must be sought as far north
as 35° N. lat., where it penetrates between the waters of the
Hoangho and those of the Yang-tsc-Kiang. It is, however,
probable that the watershed of the Yaru riycr lies considerably
further south than this chain, and occupies a position nearly
parallel to that river, till it reaches 28° N, lat, in 98° B. long",
after which its direction is nearly north and south, and it be-
comes the axis" of the Malayan peninsula, which separates Ava
and Siani on the one hand from4 Yunaii and Cochin-China on
To the north of this chain, in Tibet, lies a vast imknown
tract, in which the hcacl-u utora of the Yan^-tee-Kimig perhaps
ramify, as well as those of the.4Va river, which is identified by
Chinese geographers with Ute Neay-Kiang of Cochin-Chiua.
On the southern face of tlic chain the Dihoug, the Brahma-
putra, and the Irawadi; have their sources.. It may therefore
be considered to b* the boundary of India in tfris direction, a$
ihe frontiers of Ava and China run nearly along it.